diff --git a/doc/matlab-to-julia.md b/doc/matlab-to-julia.md
index a2394946..665fd72d 100644
--- a/doc/matlab-to-julia.md
+++ b/doc/matlab-to-julia.md
@@ -2,9 +2,17 @@
 
 Many of the functions in MIRT.jl were converted from corresponding
 functions in the
-[Matlab version of MIRT](https://github.com/JeffFessler/mirt/tree/master)
+[Matlab version of MIRT](https://github.com/JeffFessler/mirt/tree/master).
 
-Studying them can be helpful for planning translations of other Matlab functions.
+Studying them can be helpful
+for planning translations of other Matlab functions.
+The languages have many similarities,
+but also many dramatic differences
+(especially multiple dispatch)
+so automatic translation
+seems impossible
+and one must really understand the algorithm
+to do a good conversion.
 
 Here is a list of Julia functions that have direct counter-parts
 in Matlab MIRT directories of the same base name:
@@ -18,31 +26,53 @@ in Matlab MIRT directories of the same base name:
 * `fbp/rect_sino.jl`
 * `fbp/sino_geom.jl`
 
-Here are some that come from MIRT files in different directories:
+Here are some pairs
+that came from MIRT files in different directories:
 
-* `io/fld-read.jl`	<- `utilities/fld_read.m`
-* `io/fld-write.jl`	<- `utilities/fld_write.m`
-* `mri/sensemap-sim.jl`	<- `mri/mri_sensemap_sim.m`
-* `mri/kspace.jl`	<- `ir_mri_kspace_ga_radial.m`
-* `nufft/dtft.jl`	<- `nufft/dtft.m`
-* `regularize/Aodwt.jl`	<- `penalty/Godwt1.m`
-* `utility/mask.jl`	<- `utility/masker.m` `utility/embed.m`
+| Julia | Matlab |
+| :-- | :-- |
+| [`AVSfldIO/fld-read.jl`][fld-read-jl] | [`utilities/fld_read.m`][fld-read-mat] |
+| [`AVSfldIO/fld-write.jl`][fld-write-jl] | [`utilities/fld_write.m`][fld-write-mat] |
+| [`mri/sensemap-sim.jl`][sensemap-sim-jl] | [`mri/mri_sensemap_sim.m`][sensemap-sim-mat] |
+| [`mri/kspace.jl`][kspace-jl] | [`mri/ir_mri_kspace_ga_radial.m`][kspace-mat] |
+| [`nufft/dtft.jl`][dtft-jl] | [`nufft/dtft.m`][dtft-mat] |
+| [`regularize/Aodwt.jl`][odwt-jl] | [`penalty/Godwt1.m`][odwt-mat] |
+| [`utility/mask.jl`][mask-jl] | [`utility/masker.m`][masker-mat] & [`utility/embed.m`][embed-mat] |
 
 
 Matlab does not support named keyword arguments,
 so the Matlab version of MIRT uses a custom approach called
-[`vararg_pair`](https://github.com/JeffFessler/mirt/blob/master/utilities/vararg_pair.m)
+[`vararg_pair`][vararg-mat]
 as a work-around.
-In Julia you replace any such use
-with
+In Julia, replace any such use with
 [named keyword arguments](https://docs.julialang.org/en/v1/manual/functions/#Keyword-Arguments)
 with appropriate default values.
 
 When translating code from Matlab to Julia,
 often you will need to locate some functions in Matlab version of MIRT.
 To search for those functions,
-one way is to go to the repo
-https://github.com/JeffFessler/mirt
+one way is to go to the
+[mirt repo](https://github.com/JeffFessler/mirt)
 and then enter the function name in the github search bar.
-Github will then return a list like this
-https://github.com/JeffFessler/mirt/search?q=vararg_pair
+Github will then return a list
+[like this][vararg-search].
+
+
+<!-- URLs -->
+[vararg-search]: https://github.com/JeffFessler/mirt/search?q=vararg_pair
+[vararg-mat]: https://github.com/JeffFessler/mirt/blob/master/utilities/vararg_pair.m
+[fld-read-jl]: https://github.com/JeffFessler/AVSfldIO.jl/blob/main/src/fld-read.jl
+[fld-read-mat]: https://github.com/JeffFessler/mirt/blob/master/utilities/fld_read.m
+[fld-write-jl]: https://github.com/JeffFessler/AVSfldIO.jl/blob/main/src/fld-write.jl
+[fld-write-mat]: https://github.com/JeffFessler/mirt/blob/master/utilities/fld_write.m
+[dtft-jl]: https://github.com/JeffFessler/MIRT.jl/blob/master/src/nufft/dtft.jl
+[dtft-mat]: https://github.com/JeffFessler/mirt/blob/master/nufft/dtft.m
+[kspace-jl]: https://github.com/JeffFessler/MIRT.jl/blob/master/src/mri/kspace.jl
+[kspace-mat]: https://github.com/JeffFessler/mirt/blob/master/mri/ir_mri_kspace_ga_radial.m
+[odwt-jl]: https://github.com/JeffFessler/MIRT.jl/blob/master/src/regularize/Aodwt.jl
+[odwt-mat]: https://github.com/JeffFessler/mirt/blob/master/penalty/Godwt1.m
+[sensemap-sim-jl]: https://github.com/JeffFessler/MIRT.jl/blob/master/src/mri/sensemap-sim.jl
+[sensemap-sim-mat]: https://github.com/JeffFessler/mirt/blob/master/mri/mri_sensemap_sim.m
+[mask-jl]: https://github.com/JeffFessler/MIRT.jl/blob/master/src/utility/mask.jl
+[masker-mat]: https://github.com/JeffFessler/mirt/blob/master/utilities/masker.m
+[embed-mat]: https://github.com/JeffFessler/mirt/blob/master/utilities/embed.m